Extech 45170 4-in-1 Environmental Meter with Air Velocity, Humidity, Temperature, and Light

The Extech 45170 is a 4-in-1 environmental meter that combines air velocity, relative humidity, air temperature, and light measurement in one handheld instrument. Its vane anemometer delivers air velocity readings from 0.4 to 30 m/s with ±3% accuracy, making it ideal for HVAC and indoor air quality checks.

Advantages

Dual LCD with backlight shows two parameters simultaneously. Data hold and min/max functions capture readings for later review. Auto power off with disable feature conserves battery life. Includes Type K bead wire probe for temperature measurements from -100 to 1300°C.

Suitable for

• HVAC system testing and balancing
• Indoor air quality assessments
• Environmental monitoring in labs and cleanrooms
• Field service and maintenance technicians

Key specifications

• Air velocity: 0.4 to 30 m/s (80 to 5900 ft/min), ±3% of reading
• Air flow: 0 to 99999 CFM/CMM
• Relative humidity: 10 to 95% RH, ±5% RH
• Air temperature: 0 to 50°C (32 to 122°F), ±1.2°C (±2.5°F)
• Type K temperature: -100 to 1300°C (-148 to 2372°F), ±(1% of reading + 1°C)
• Light: 0 to 20,000 Lux (0 to 2000 Fc), ±5% of reading
• Display: Dual LCD with backlight
• Data hold and min/max functions
• Auto power off with disable feature
• Power: 9V battery
• Anemometer sensor: vane type
• Light sensor: silicon photodiode with filter
• Included accessories: Type K bead wire temperature probe, 9V battery, protective rubber holster, carrying case

Recommendations

For comprehensive environmental measurements in a single portable device, the Extech 45170 offers reliable performance across four key parameters.